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rnicolausFlag for United States of America

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Exchange 2007 on SBS 2008 - few emails after client DNS mistake

Client changed their DNS because hosting a website on iPower.  Their email, running on exchange stopped receiving email  (of course - as would be expected)  Once they called and we got the MX records correctly pointing back to the exchange server, test emails come in normally.

The problem is, they are not receiving emails from clients (nor spam either which is ok but not normal) which they usually get dozens per day per user are now 1 or 2 at most.  Any ideas?

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Old User
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Why change the dns if the have moved website?
do they have hosted exchange? and if they do check with the host do they use spam filters?
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The website is hosted.  The exchange is internal (Exchange 2007 on SBS 2008 server as title states)
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nwtechdesk
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It must've been DNS related because by 48 hours all was back to normal.  Strange as I have seen 2-3 hours as the practical norm lately - does point to the registrar standard warning of 24-48 hrs to propagate as still being valid.  Thx